CN113839329B - High-voltage isolating switch moving contact dismounting clamp - Google Patents
High-voltage isolating switch moving contact dismounting clamp Download PDFInfo
- Publication number
- CN113839329B CN113839329B CN202111238141.3A CN202111238141A CN113839329B CN 113839329 B CN113839329 B CN 113839329B CN 202111238141 A CN202111238141 A CN 202111238141A CN 113839329 B CN113839329 B CN 113839329B
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- arc
- rod
- shaped baffle
- gear
- movable seat
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a fixture for disassembling and assembling a moving contact of a high-voltage isolating switch, which comprises a supporting rod, a moving seat, a driving rod, a gear, an arc-shaped baffle A and an arc-shaped baffle B; the support rod is axially and horizontally arranged, and a plurality of strip-shaped teeth are arranged on the upper surface of the support rod; the arc-shaped baffle A is fixedly connected to the left side of the lower surface of the supporting rod; the movable base is internally provided with a through groove A with left and right openings, the movable base is movably sleeved on the supporting rod through the through groove A and is positioned on the right side of the arc-shaped baffle A, the lower part of the movable base is fixedly connected with the arc-shaped baffle B, and the arc-shaped baffle A and the arc-shaped baffle B are used for clamping the moving contact of the high-voltage isolating switch. According to the invention, the disassembly and assembly of the moving contact of the high-voltage isolating switch are realized in a more labor-saving transmission mode; after the contact fingers of the movable contact are separated, the device can keep the open angle of the contact fingers fixed without supporting, so that the single person can be disassembled and assembled, and the assembly and disassembly efficiency is high.
Description
Technical Field
The invention relates to an electric power maintenance tool, in particular to a high-voltage isolating switch moving contact dismounting clamp.
Background
In the prior art, the assembly and the disassembly of the contact blades of the high-voltage isolating switch mainly take the manual pressing of the contact fingers for disassembly. The method is extremely difficult to operate and can not be operated by a single person, and a manual finger is required to press the front contact finger, so that the spring at the rear end is opened for replacement. At present, for a large current-carrying capacity contact with 8 contact fingers and 4 springs, a single person can hardly pull the springs apart for installation. Because when the manual power dismantles the contact finger, can't make four pairs of contact fingers keep at a fixed angle of opening simultaneously, be difficult to take off the contact finger when a certain contact finger angle is too little, will cause contact finger, locating pin etc. fish tail isolator surface coating, damage power equipment, buries the potential safety hazard. In addition, the dismantling contact is high-altitude operation, and high-altitude operation working area is little, and when two people joined in marriage simultaneously, high-altitude operation risk is great, and when the manpower pulls open the spring, is injured the finger by the spring easily, has the potential safety hazard.
Through investigation, an auxiliary tool (CN 104505753A) invented by a patent is available on the market aiming at tools of the type, but in the use process of the tool, the requirement on the strength of an operator is high for a large current-carrying capacity contact of 8 contact fingers and 4 springs, and a single person and two hands are required to operate to open all tentacles, so that the safety can be ensured only by double persons during aloft work.
Disclosure of Invention
Aiming at the problems in the background art, the invention aims to provide the high-voltage isolating switch moving contact dismounting clamp which is used for dismounting the high-voltage isolating switch moving contact by adopting a mechanical structure with a matched gear rack.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a fixture for disassembling and assembling a moving contact of a high-voltage isolating switch comprises a supporting rod, a moving seat, a driving rod, a gear, an arc-shaped baffle A and an arc-shaped baffle B; the support rod is axially and horizontally arranged, and a plurality of strip-shaped teeth are arranged on the upper surface of the support rod; the arc-shaped baffle A is fixedly connected to the left side of the lower surface of the supporting rod;
the movable seat is internally provided with a through groove A with left and right openings, the movable seat is movably sleeved on the supporting rod through the through groove A and is positioned on the right side of the arc-shaped baffle A, the lower part of the movable seat is fixedly connected with an arc-shaped baffle B, and the arc-shaped baffle A and the arc-shaped baffle B are used for clamping a moving contact of the high-voltage isolating switch;
the middle part of the top wall of the through groove A of the movable seat is provided with a through groove C, two side walls of the through groove A are fixedly provided with a gear shaft in a penetrating way, the gear is rotatably sleeved on the gear shaft and positioned in the middle part of the through groove A, and the gear is meshed with the strip-shaped teeth;
the lower end of the driving rod is provided with a double-lug plate which is arranged on both sides of the middle part of the movable seat in a straddling way and is respectively hinged with both ends of the gear shaft, a rotatable torsion shaft is arranged between the double-lug plates, the torsion shaft is parallel to the gear shaft and is positioned above the movable seat, a deflector rod is fixedly connected on the torsion shaft, the deflector rod is connected with a torsion spring, the lower end of the deflector rod passes through the through groove C and is propped left in a tooth groove of the gear, and is used for driving the gear to directionally rotate, and the gear drives the movable seat to move on the supporting rod;
one end of the torsion shaft is provided with a linkage rod, and the linkage rod is used for enabling the deflector rod to overcome the elasticity of the torsion spring and to be separated from a tooth slot of the gear, so that the gear can rotate reversely under the reaction force of resetting of the moving contact of the high-voltage isolating switch to drive the movable seat to reset.
The linkage rod is positioned at the outer side of one lug plate of the driving rod, and one end of the torsion shaft penetrates through the lug plate and is fixedly connected with the upper end of the linkage rod; the side wall of the movable seat is provided with a stop lever, and the stop lever is positioned on the right side of the linkage rod and used for blocking the linkage rod.
The stop lever passes through the fixed block and connects the lateral wall that removes the seat, and the clearance between stop lever and the removal seat lateral wall is greater than the thickness of an otic placode.
The movable seat is integrally of a cuboid structure, and two openings of the through groove A are respectively positioned at two ends of the movable seat in the length direction; the whole straight bar that is the cross-section rectangle of bracing piece, logical groove A is the rectangle logical groove, its width and the width clearance fit of bracing piece still are equipped with the adjustment backing plate between logical groove A's diapire and bracing piece for the clearance between adjustment bracing piece and the gear.
One end of the torsion spring is fixedly connected to the inner side wall of one ear plate, and the other end of the torsion spring is connected with the deflector rod.
The arc-shaped baffle A is fixedly connected with the supporting rod through a connecting rod A, and a stop block A is arranged at the upper part of the inner side of the arc-shaped baffle A and used for limiting the end part position of a contact finger at one side of a moving contact of the high-voltage isolating switch; the arc-shaped baffle B is fixedly connected with the bottom of the movable seat through a connecting rod B, a stop block B is arranged at the upper part of the inner side of the arc-shaped baffle B, and the stop block B is used for limiting the end part position of the contact finger at the other side of the movable contact of the high-voltage isolating switch; the lower ends of the arc-shaped baffle A and the arc-shaped baffle B are bent inwards.
The beneficial effects of the invention are as follows: according to the invention, the distance between the two arc clamping plates is changed through the movable seat driven by the driving rod, so that the dismounting of the movable contact of the high-voltage isolating switch is realized in a more labor-saving transmission mode; after the contact fingers of the movable contact are separated, the opening angle of the contact fingers can be kept fixed without supporting the device, so that the single person can be disassembled and assembled; in addition, when the driving rod reversely presses the stop lever downwards, the gear can be restored to the degree of freedom, so that the movable seat is automatically reset by utilizing the tension of the spring on the movable contact of the high-voltage isolating switch, and the assembly and disassembly efficiency is high.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention when the movable base moves leftwards.
Fig. 2 is a schematic overall structure of the present invention when the movable seat is reset.
Fig. 3 is a front cross-sectional view of the present invention.
Fig. 4 is a front sectional view with the arc baffle B omitted.
Fig. 5 is a left side view of the travel base and drive rod.
FIG. 6 is a right side cross-sectional view of the lever abutting the gear tooth slot.
Fig. 7 is a right side cross-sectional view of the shift lever disengaged from the gear tooth slot.
Fig. 8 is a right side cross-sectional view of the drive rod.
Fig. 9 is a front view of the torsion shaft.
Fig. 10 is a right side cross-sectional view of the travel stock and the backing plate.
Fig. 11 is a front view of the mobile station.
In the figure: 1. the movable base comprises a supporting rod, a movable base, a driving rod, a gear, an arc-shaped baffle A, an arc-shaped baffle B, an arc-shaped baffle 7 and a high-voltage isolating switch moving contact;
101. bar-shaped teeth; 201. through grooves A and 202, through grooves C and 203, a stop lever 204, a fixed block 205 and an adjusting base plate; 301. a double-lug plate 302, a torsion shaft 303, a deflector rod 304, a torsion spring 305 and a linkage rod; 401. a gear shaft.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is to be noted that the embodiments described are merely some, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 11, a high-voltage isolating switch moving contact dismounting clamp comprises a supporting rod 1, a moving seat 2, a driving rod 3, a gear 4, an arc-shaped baffle A5 and an arc-shaped baffle B6; the support rod 1 is axially and horizontally arranged, and a plurality of strip-shaped teeth 101 are arranged on the upper surface of the support rod 1; the arc-shaped baffle A5 is fixedly connected to the left side of the lower surface of the supporting rod 1;
as shown in fig. 1, 2 and 10, a through groove a201 with left and right openings is arranged in the movable seat 2, the movable seat 2 is movably sleeved on the support rod 1 through the through groove a201 and is positioned on the right side of the arc-shaped baffle A5, the lower part of the movable seat 2 is fixedly connected with an arc-shaped baffle B6, and the arc-shaped baffle A5 and the arc-shaped baffle B6 are used for clamping the high-voltage isolating switch moving contact 7;
as shown in fig. 4 and 10, a through groove C202 is provided in the middle of the top wall of the through groove a201 of the movable seat 2, a gear shaft 401 is fixedly provided on two side walls of the through groove a201, the gear 4 is rotatably sleeved on the gear shaft 401 and is located in the middle of the through groove a201, and the gear 4 is meshed with the bar-shaped teeth 101; if so, when the gear 4 rotates, the bar-shaped teeth 101 drive the support bar 1, so that the support bar 1 and the movable seat 2 perform relative movement;
as shown in fig. 3, fig. 4, fig. 8 and fig. 9, the lower end of the driving rod 3 is provided with a double-lug plate 301, the double-lug plate 301 is spanned on two sides of the middle part of the movable seat 2 and respectively hinged with two ends of a gear shaft 401, a rotatable torsion shaft 302 is arranged between the double-lug plate 301, the torsion shaft 302 is parallel to the gear shaft 401 and is positioned above the movable seat 2, a deflector rod 303 is fixedly connected to the torsion shaft 302, the deflector rod 303 is connected with a torsion spring 304, the lower end of the deflector rod 303 passes through a through groove C202 and is left against in a tooth groove of a gear 4 for driving the gear 4 to directionally rotate, and the gear 4 drives the movable seat 2 to move on the supporting rod 1; specifically, the binaural plates 301 are located at two sides of the moving seat 2, so that the driving rod 3 has a larger degree of freedom;
as shown in fig. 4 and 5, one end of the torsion shaft 302 is provided with a linkage rod 305, and the linkage rod 305 is used for making the shift rod 303 overcome the elastic force of the torsion spring 304 and disengage from the tooth slot of the gear 4, so that the gear 4 rotates reversely under the reaction force of resetting the moving contact of the high-voltage isolating switch to drive the movable seat 2 to reset.
Specifically, the motion principle of the above structure is as follows:
as shown in fig. 1 and 6, when the driving rod 3 rotates anticlockwise in the view angle of fig. 1, because the lower end of the deflector 303 is positioned at the left side of the center of the gear, the deflector 303 always abuts against one tooth socket of the gear 4 and cannot be separated under the elasticity of the torsion spring 304, so that the gear 4 is driven to rotate anticlockwise, and the support rod 1 and the movable seat 2 are relatively moved;
when the driving rod 3 rotates clockwise, as shown in fig. 2 and 7, in the view of fig. 2, the elasticity of the torsion spring 304 is insufficient to overcome the friction force between the gear 4 and the bar-shaped teeth 101, so that the driving rod 303 drives the torsion spring to deform elastically and disengage from the tooth grooves of the gear 4, at this time, the driving rod 3 idles and the gear 4 does not rotate, and when the driving rod 3 returns to the position, the anticlockwise rotation can be continued, and the moving seat 2 is driven to move leftwards again;
when the movable seat 2 moves leftwards, the distance between the arc baffle A5 and the arc baffle B is reduced, so that the contact fingers of the movable contact 7 of the high-voltage isolating switch are pressed to be opened, and at the moment, even if the driving rod 3 is loosened, the deflector rod 303 still abuts against the tooth grooves of the gear 4 under the action of the torsion spring 304, therefore, the gear cannot rotate even though the spring tension between the contact fingers is large, and the opening angle of the contact fingers can be fixed;
when the change of the moving contact of the high-voltage isolating switch is completed, the linkage rod 305 can be stirred, so that the linkage rod 305 drives the stirring rod 303 to lift up and separate from the tooth slot of the gear 4, at the moment, the moving seat 2 moves rightwards under the action of the spring tension between the contact fingers, and the support rod drives the gear to rotate, so that the reset can be freely and rapidly completed; when the spring tension is lost, if the user moves a larger distance, the lifting state of the shift lever 303 can be kept, and the moving seat 2 is manually pulled.
The linkage rod 305 is positioned at the outer side of one lug plate of the driving rod 3, and one end of the torsion shaft 302 penetrates through the lug plate and is fixedly connected with the upper end of the linkage rod 305; the side wall of the movable seat 2 is provided with a stop lever 203, and the stop lever 203 is positioned on the right side of the linkage rod 305 and is used for blocking the linkage rod 305. The purpose of this configuration is to utilize the rotation of the driving lever 3 to shift the linkage lever 305 at the stop lever 203, thereby disengaging the shift lever 303 from the gear, and facilitating the resetting operation of the movable seat 2.
As shown in fig. 11, the stop lever 203 is connected to the side wall of the movable seat 2 through the fixing block 204, and the gap between the stop lever 203 and the side wall of the movable seat 2 is larger than the thickness of one ear plate. This is mainly to ensure a large degree of freedom of the drive rod 3.
As shown in fig. 1, 4 and 10, the movable seat 2 has a rectangular structure as a whole, and two openings of the through groove a201 are respectively located at two ends of the movable seat in the length direction; the whole bracing piece 1 be the straight-bar that the cross-section is rectangular, lead to the groove A201 and be rectangular logical groove, its width and the width clearance fit of bracing piece 1 still be equipped with between the diapire of logical groove A201 and bracing piece 1 and adjust backing plate 205 for adjust the clearance between bracing piece 1 and the gear 4.
One end of the torsion spring 304 is fixedly connected to the inner side wall of one ear plate, and the other end is connected with the deflector rod 303.
The arc-shaped baffle A5 is fixedly connected with the supporting rod 1 through a connecting rod A501, and a stop block A502 is arranged at the upper part of the inner side of the arc-shaped baffle A5 and used for limiting the end part position of a contact finger at one side of a moving contact 7 of the high-voltage isolating switch; the arc-shaped baffle B6 is fixedly connected with the bottom of the movable seat 2 through a connecting rod B601, a stop block B602 is arranged at the upper part of the inner side of the arc-shaped baffle B6, and the stop block B602 is used for limiting the end part position of the contact finger at the other side of the movable contact 7 of the high-voltage isolating switch; the lower ends of the arc-shaped baffle A5 and the arc-shaped baffle B6 are bent inwards.
The application method of the invention comprises the following steps:
firstly, the movable seat is positioned at an initial position, a larger distance is kept between the arc-shaped baffle A5 and the arc-shaped baffle B, and the arc-shaped baffle A5 and the arc-shaped baffle B are respectively arranged outside contact fingers at two sides of a movable contact 7 of a high-voltage isolating switch; then, in the range of travel, the driving rod 3 is pulled in a reciprocating manner, so that the movable seat 2 gradually approaches the arc-shaped baffle A5, and the arc-shaped baffle A5 and the arc-shaped baffle B press the contact fingers at two sides, so that the contact fingers are opened; the support rod 1 can be grasped by one hand, and the high-voltage isolating switch moving contact 7 is separated from the tentacle by one hand for replacement; after replacement, one hand grips one end of the supporting rod 1, and the other hand presses the driving rod 3 reversely until the linkage rod 3 is deflected after being abutted by the stop rod 203, and the movable seat 2 can be quickly reset.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
The invention is not described in detail in the prior art.
Claims (4)
1. A high-voltage isolating switch moving contact dismounting clamp comprises a supporting rod (1), a moving seat (2), a driving rod (3), a gear (4), an arc-shaped baffle A (5) and an arc-shaped baffle B (6); the method is characterized in that: the support rod (1) is axially and horizontally arranged, and a plurality of strip-shaped teeth (101) are arranged on the upper surface of the support rod (1); the arc-shaped baffle A (5) is fixedly connected to the left side of the lower surface of the supporting rod (1);
the movable seat (2) is internally provided with a through groove A (201) with left and right openings, the movable seat (2) is movably sleeved on the supporting rod (1) through the through groove A (201) and is positioned on the right side of the arc-shaped baffle A (5), the lower part of the movable seat (2) is fixedly connected with an arc-shaped baffle B (6), and the arc-shaped baffle A (5) and the arc-shaped baffle B (6) are used for clamping a high-voltage isolating switch moving contact (7);
a through groove C (202) is formed in the middle of the top wall of the through groove A (201) of the movable seat (2), a gear shaft (401) is fixedly arranged on two side walls of the through groove A (201) in a penetrating mode, the gear (4) is rotatably sleeved on the gear shaft (401) and is positioned in the middle of the through groove A (201), and the gear (4) is meshed with the strip-shaped teeth (101);
the lower end of the driving rod (3) is provided with a double-lug plate (301), the double-lug plate (301) is arranged on two sides of the middle of the movable seat (2) in a straddling manner and is respectively hinged with two ends of a gear shaft (401), a rotatable torsion shaft (302) is arranged between the double-lug plate (301), the torsion shaft (302) is parallel to the gear shaft (401) and is positioned above the movable seat (2), a deflector rod (303) is fixedly connected to the torsion shaft (302), the deflector rod (303) is connected with a torsion spring (304), the lower end of the deflector rod (303) penetrates through a through groove C (202) and is butted left in a tooth groove of a gear (4) for driving the gear (4) to directionally rotate, and the gear (4) drives the movable seat (2) to move on the supporting rod (1);
one end of the torsion shaft (302) is provided with a linkage rod (305), the linkage rod (305) is used for enabling the deflector rod (303) to overcome the elasticity of the torsion spring (304) and be separated from a tooth socket of the gear (4), so that the gear (4) can reversely rotate under the reaction force of resetting a moving contact of the high-voltage isolating switch to drive the movable seat (2) to reset; the linkage rod (305) is positioned at the outer side of one lug plate of the driving rod (3), and one end of the torsion shaft (302) penetrates through the lug plate and is fixedly connected with the upper end of the linkage rod (305); the side wall of the movable seat (2) is provided with a stop lever (203), and the stop lever (203) is positioned on the right side of the linkage rod (305) and used for blocking the linkage rod (305); the movable seat (2) is of a cuboid structure as a whole, and two openings of the through groove A (201) are respectively positioned at two ends of the movable seat in the length direction; the whole straight bar that is the cross-section rectangle of bracing piece (1), logical groove A (201) are rectangle logical groove, its width and the width clearance fit of bracing piece (1), still be equipped with between the diapire of logical groove A (201) and bracing piece (1) and adjust backing plate (205) for the clearance between regulation bracing piece (1) and gear (4).
2. The high-voltage isolating switch moving contact dismounting clamp of claim 1, wherein: the stop lever (203) is connected with the side wall of the movable seat (2) through the fixed block (204), and the gap between the stop lever (203) and the side wall of the movable seat (2) is larger than the thickness of one lug plate.
3. The high-voltage isolating switch moving contact dismounting clamp of claim 1, wherein: one end of the torsion spring (304) is fixedly connected to the inner side wall of one ear plate, and the other end of the torsion spring is connected with the deflector rod (303).
4. The high-voltage isolating switch moving contact dismounting clamp of claim 1, wherein: the arc-shaped baffle A (5) is fixedly connected with the supporting rod (1) through a connecting rod A (501), and a stop block A (502) is arranged at the upper part of the inner side of the arc-shaped baffle A (5) and used for limiting the end part position of a contact finger at one side of a moving contact (7) of the high-voltage isolating switch; the arc-shaped baffle B (6) is fixedly connected with the bottom of the movable seat (2) through a connecting rod B (601), a stop block B (602) is arranged at the upper part of the inner side of the arc-shaped baffle B (6), and the stop block B (602) is used for limiting the end part position of the contact finger at the other side of the movable contact (7) of the high-voltage isolating switch; the lower ends of the arc-shaped baffle A (5) and the arc-shaped baffle B (6) are bent inwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111238141.3A CN113839329B (en) | 2021-10-25 | 2021-10-25 | High-voltage isolating switch moving contact dismounting clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111238141.3A CN113839329B (en) | 2021-10-25 | 2021-10-25 | High-voltage isolating switch moving contact dismounting clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113839329A CN113839329A (en) | 2021-12-24 |
| CN113839329B true CN113839329B (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111238141.3A Active CN113839329B (en) | 2021-10-25 | 2021-10-25 | High-voltage isolating switch moving contact dismounting clamp |
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| Country | Link |
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| CN (1) | CN113839329B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064973A (en) * | 2014-06-18 | 2014-09-24 | 国家电网公司 | Maintaining device for fixed contact of isolating switch |
| CN203911307U (en) * | 2014-06-18 | 2014-10-29 | 国家电网公司 | Static contact maintenance device of isolating switch |
| CN105356341A (en) * | 2015-11-19 | 2016-02-24 | 宁波奥克斯高科技有限公司 | Calibration apparatus of circuit breaker handcart |
| JP5916973B1 (en) * | 2015-06-12 | 2016-05-11 | 三菱電機株式会社 | Power switchgear operating device |
| JP6827619B1 (en) * | 2019-08-16 | 2021-02-10 | 杭州康研文具有限公司 | Portable easel for outdoor oil paintings |
-
2021
- 2021-10-25 CN CN202111238141.3A patent/CN113839329B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064973A (en) * | 2014-06-18 | 2014-09-24 | 国家电网公司 | Maintaining device for fixed contact of isolating switch |
| CN203911307U (en) * | 2014-06-18 | 2014-10-29 | 国家电网公司 | Static contact maintenance device of isolating switch |
| JP5916973B1 (en) * | 2015-06-12 | 2016-05-11 | 三菱電機株式会社 | Power switchgear operating device |
| CN105356341A (en) * | 2015-11-19 | 2016-02-24 | 宁波奥克斯高科技有限公司 | Calibration apparatus of circuit breaker handcart |
| JP6827619B1 (en) * | 2019-08-16 | 2021-02-10 | 杭州康研文具有限公司 | Portable easel for outdoor oil paintings |
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| Publication number | Publication date |
|---|---|
| CN113839329A (en) | 2021-12-24 |
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